| 单词 | ultrafilter |
| 释义 | ultrafilter /ulˈtrə-fil-tər/ (biology and chem)nounAn extremely fine filter which retains particles as fine as large molecules transitive verbTo pass through an ultrafilter ORIGIN: ultra- (2) ultrafīlˈtrate noun A substance that has passed through an ultrafilter ultrafīltrāˈtion noun The separation of particles by filtration, under suction or pressure |
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